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Why are Python strings immutable? What does befits of it?

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Why are Python strings immutable? What does befits of it?
posted Nov 30, 2014 by Amit Kumar Pandey

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Python String are immutable. There is some advantage to have string as immutable.

First advantage is performance, knowing that a string is immutable means we can allocate space for it at creation time, and the storage requirements are fixed and unchanging. This is also one of the reasons for the distinction between tuples and lists.

Another advantage is that strings in Python are considered as "elemental" as numbers. No amount of activity will change the value 8 to anything else, and in Python, no amount of activity will change the string "eight" to anything else.

answer Dec 1, 2014 by Kali Mishra
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